(CFR) The codification of federal regulations established by 44 U.S.C. § 1510.
Congress delegates the authority to regulate certain activities to administrative agencies, which apply specialized knowledge to the creation and enforcement of those regulations. A statute grants an agency the authority to promulgate certain regulations. E.g., in 1970, the Clean Air Act, 42 U.S.C. §7401 et seq., authorized the Environmental Protection Agency to establish national air quality standards. The EPA established these standards in a set of regulations, which can be found in part in 42 CFR Part 51. The Federal Register publishes every agency's new regulations every day. Every year, under 44 U.S.C. § 1510, the Federal Register also publishes a compilation of these regulations: the Code of Federal Regulations.